racker/rackspace-monitoring-agent-plugins-contrib — pull request #59 by joeashcraft (2014-11-11 17:14:34+00:00)
Title: Update varnish.sh

calculate hit_percent as a ratio of hits to connections. this also makes sure bc won't divide by 0.
Use "varnishadm backend.list" for varnish>2.0.
Make the plugin output minimal info if no varnishadm fields are specified.